Device for feeding and compressing granular materials.



M. J. FOGARTY.

DEVICE FOR FEEDING AND COMPRESSING GRANU'LAR MATERIALS.

- APPLICATION FILED JAN-26. I915.

1 ,1 M376, Patented Dec. 14, 1915.

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MICHAEL J. FOG-ARTY, F BROOKLYN, NEW YORK.

DEVICE FOR FEEDING AND GOMIPRESSING GRANULAR MATERIALS.

Specification of Letters Iatent. Patented Der}, JML, 1915..

Application filed January 26, 1915. Serial No. t,4=76.

To all whom iii-may concern:

Be it known that 1, MICHAEL J. FooAR'rY, a citizen of the United States, and resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Devices for Feeding and Compressing Granular Materials, of which thefollowing is a specification.

The invention relates to improvements in devices for feeding and compressing granular materials of various kinds, the same being particularly designed for compacting materials for filling packages; and the ob- 'ject of the invention is to provide a device having a more positive feeding and compressing action, and also includes certain details of construction hereinafter set forth.

' In describing the invention in detail ref- I erence is had to the accompanying drawings,

forming part of. this specification, and

wherein like "characters of reference are used to designate corresponding parts throughout the several views, and in which:

Figure 1 is a side elevation, shown partially in section, of the device embodied in the present invention; and Fig. 2 is an end elevation of the same, the casing thereof being shown partially in section taken along the broken line w--m, Fig. 1.

In the drawings, numeral 1 designates a casing, having at its lower end the supporting feet 2, and at its upper end a receivinghopper 3 for the material operated upon. A

bearing 4 is formed on one side wall of the casing, and the bottom wall 5 of the latter is semicircular in form and disposed concentrically with the axis of said bearing. Within the casing is mounted a worm 6, having an integral journal-end 7, mounted for rotation Within the bearing 4, and driven by the exterior pulley 8, fixed to said journal-end; Above the worm the casing is provided with bearings 9, in which is rotatably mounted a 4 shaft 10, laterally positioned by the exterior collars .11, and upon the shaft is fixed a worm-wheel 12, engaged for rotary movement by the worm 6. Fixed upon the shaft, within the casing and on opposite sides-of the worm-wheel, are pressure-wheels 13, the

peripheries of which conform with and lie closely ad'acent the circumference of the worm 6. rojecting ledges 14 are provided on the peripheral surfaces of the pressurewheels, and are spirally arran ed thereon the wheels with respect to the movement 0 for the advancement of the material. Toward its upper end the receiving-hopper 3 1s outwardly flared to increase its storage capaclty, and in connection therewith the casing is provided with a circular projectmg portion 15, arranged to incase the upwardly moving part of the worm-wheel and the pressure-wheels and control in a measure the flow of the material. For delivering the compressed material the casing is provided with a discharge opening or spout 16, having a cylindrical portion encircling the delivery end of the worm and a tapered outlet portion of gradually reduced internal area.

In the operation of the device, the material fed into the receiving-hopper 3 is urged downwardly by the movement of the projecting teeth of the worm-wheel 12 and the ledgesformed on the Pressure-wheels 13, which movement tends to prevent the choking action of the material within the hopper and serves also to feed the same between the spiral threads ofthe worm 6. By the rotation of the worm1in the direction indicated by the arrow, the material is uniformly advanced to the point of engagement with the worm-wheel, from which point the engaging teeth of the latter serve to forwardly force the material in a substantially positive manner along the advancing spiral groove of the worm to the discharge-spout 16, the tapering wall of the latter offering by its reduced internal area a resistance to the flow of the material which acts to compress the latter. For preventing lateral displace.

ment from the Worm of the material under pressure,'the peripheral surfaces of the pressure-wheelsl3, as heretofore described, are shaped to conform with the circumference of the worm, and the spiral arrangement of the ledges on said wheels serves to direct the material both forwardly, and inwardly toward the worm, for increasing its pressure and reducing its friction against the side walls of the casing. By varylng the internal diameter of the discharge spout, a corre sponding variation in the pressure of the discharged material may be obtained for its delivery by any approved means into suitable containers.

What ll claim as my invention and desire to secure by Letters Patent is:

1. In a feeding and compressing device, a

casing having asupply opening for the. ma-

terial, a rotatable worm in said casing, a

ioo

worm-wheel rotatably engaged by said worm, means co-actingwith said worm and worm-wheel, for confining the material against lateral displacement from said worm, and a discharge-opening in said casing communicating with said worm.

2. In a feeding and compressing device, a

casing having a supply opening for the ma- 7 terial, a worm in said casing rotatably supported at one end, a worm-wheel rotatable in said casing and engaged by said worm, pressure-wheels mounted on opposite sides of said worm-wheel and rotatable therewith and having the peripheries thereof conforming with. the. circumference'of said worm, spirally formed ledges projecting from the peripheral surfaces of said pressure-wheels and disposed to advance the material toward said Worm, and a discharge opening for said casing having a cylindrical portion encircling the delivery end of said worm and a tapered outlet portion of internal area. a

4. In a feeding and compressing device, a

gradually reduced casing'provided with a bearing, a semicircular bottom wall for said casing concentric with the am's of said bearing, a worm disposed within said casing and having an integral journal-end mounted in said bearing end of said worm and a tapered outlet portion of gradually reduced internal area.

5. In combination with a feeding device including a rotatable worm, of opposing pressure-wheels rotatably mounted above said Worm and having peripheral surfaces conforming with the circumference thereof and arranged to direct the material thereto.

6. In combination with a feeding and compressing device including a Worm and worm-wheel in rotatable engagement, of pressure-wheels disposed on opposite sides of said worm-wheel and rotatable therewith and having peripheral surfaces conforming with the circumference of said worm, and spirally-formed ledges projecting from the peripheral surfaces of said pressure-wheels and disposed to advance the material toward said worm.

Signed at Brooklyn in the county of Kings and State of New York' this 21st day of J an. A. D. 1915.

. MICHAEL J. FOGARTY. Witnesses: JAMES J. BRAY, JOHN S.- FOGARTY. 

